Power atomizer



imatented Dec. 2l, i926.

UNTED STATES neunte rarest onirica.d

CARL E. ANDERSON, OF. BROOKLYN, NEW' YRK, ASSGNGR TO AMERICAN' MACHINE @n FOUNDRY COMPANY, A. CORPORATGN Ol NEW' JERSEY.

POWER ATOIVIZER.

Application led February This invention relates to a power atomizer tor spraying liquids. The main object oi the invention is the production of a power atomizer, particularly adapted for use in oil burning systems, and which is simpler' than known devices adapted `for such use, and less expensive to install and maintain. lVith this and other objects not specifically mentioned in view, the invention consists in certain construct-ions and combinations which will be hereinafter fully described and thenspeciiically set forth in the claims hereunto appended.

ln the accompanying drawing, which forms a part of this specification and in which like characters of reference indicate the same or like parts, the figure is an elevation, partly in section, oi' a device constructed in accordance with the invention.

ln carrying the invention into edect, there is provided an air pump of any suitable type, a v cuum device (such for example as the well known Stewart vacuum tank), an intake for the pump which. is in communication with said device or vacuum tank and also with the atmosphere, and a constricted outlet Jfor the pump to cause outflow under pressure, to the end that a part of the air drawn into the pump comes directly and` continuously from the atmosphere, another part comes intermittently from the vacuum device or tank, and all the air is discharged trom the pump under pressure for atomizingl purposes. There is further pnovided means for regulating the action of the in` take in accordance with the nature of the liquid to be sprayed and other conditions; a conduit leading 'from the vacuum device or tank to the pump outlet; and a supply tank in con'nnunication with said device, the liquid being raised from the supply tank io the vacuum device or tank by atmospheric pressure when a partial vacuum is produced in the vacuum device or tank by the action ot the pump. All of these parts may be ridely varied in construction within the scope of the claims for the particular device selected to illustrate the invention is but one of many possible concrete embodiments of the same. The invention therefore is not to be restricted to the precise details of the structure shown and described.

Referring to the drawing, l indicates a rotary pump of the type described in my 'co-pending application tiled December 22,

4, 1924:. Serial No. 690,386.

1923, Serial No. 682,135, to which reference made tor a full disclosure thereof. rlhere further provided a vacuum device 201' the well known Stewart type, which needs no detailed description herein. There is further provided an intake tor said pump and, as shown, this intake includes a T- pipe 3, one branch oi" which is threaded into the suction side of the pump at t. Another branch carries a short pipe 5 having a constricted orifice 6 'in open communication with the atmosphere. The third branch of the T-pipe 3, is united with a pipe 7 in communication with the intake and with the vacuum device'2. communication with the vacuumdevice and with the atmosphere.` Means are provided for regulating the action of said intake and, as shown, this means consists of a valve 8 between the vacuum device 2 and the intake 3.

There is further provided a supply tank 9 for holding, the liquid to be sprayed, and this supply tank is kept in communication with the vacuum device 2 by means of a pipe 10.

The pump 1 is provided with a lubricantV chamber 11, the operation of which is fully described in my copendin,g` application above referred to.

A part of the air drawn into the pump comes contini'iously from the atmosphere, while the other part comes intermittently from the vacuum device 2. From the cylinder of the pump, the air iiows through a passage 12 into the lubricating chamber l1 above the lubricant. From this chamber it is expelled through a constricted outlet, as shown, consisting o1" the pipe 13 and a nozzle 1d provided with a small' discharge orifice 15. The purpose of this constricted outlet is to permit the air pressure to build up in the lubricant chamber to a degree suiicient for atomizing purposes.

The nozzle 14 lies within and i'orms a part of an atomizer 16 oi well known construction and operation. A pipe or conduit 17, leading from the vacuum device 2 to the atomizer 16, is provided, and the atomizer islocated at a lower level than the vacuum device. The various parts oi' the structure may be located in any suitable relative position, dependent upon the use to which it is put. i/Vhen it is used as a part of an oil burning system, however, the supply tank 9 for the Thus, the intake is lin f the 5 v.ated in the vacuum device 2, atmospheric Ipressure ldrives the liquid iti-om the supply tank Qup in to the 'vacuum device, and the liquid Will continue to so 'tloi'v until the ilcat Withinthe vacuum device cutsoil the connection betweensaid device and the intake -`inthe n'ieautime, airpressureis built upin theilubricant chamberll-ot the pump and discharged through the oritice l5. The liq- -uijdJfinili'e vacuun'i device Vflows byfgravity to the '-,atoinizer 16 where it is atomized by A ir escaping umherpressure. When a litt-le., of l:the liquid in the `vacuum device. has rundown-to the atomizer, tne floaty falls and reestablishes connnunigcation, between the vacuum device andthe intake 3, and this intermittentaction continues so long-asv the pump operates and an available supply of liquid remains in the supply tank. This action is the Well knoivn action of the Stei'vart vaciuun tank 4'which thus 'controls :the `feed oit 'the liquid.

YTemay be here/remarked that the pump is of the rotatary type directly driven by a high speed velectric motor; the speed `ot the 'pump ,being great, its sizefmay be small, and since it acts both Aas a 'pressure pump andas a vduit:leading 'from said tank to said outlet,

:and la supply .tank-in communication witl'i Vsaid tank.

1Q. ,The combination Withfan an' pump, ot

a vacuum tank, anintake for said pump in comniunication with .said rtank and with tank.

3. The combination with an air pump, of a. vacuum tank, an intake for said pump in communication With said tankand -ivith the atmosphere, va cnstricted outlet v t'or Said pump to cause 'outflow underfpressure and terminatingl in van atomizcr,=a conduit leading from said tank tosaid atomizer, 'a supply tank in comniunication With said tank, and means tor regulating the action'orn said intake. l

Thecombination ivitii'an air ;pump, ot avacuum tank, an Iintakeor said A:pumpin communication livit-hlsaid{ta-nk 4and with the atmosphere, a ,constrictedjoutlet for Ysaid pump to cause outflowrunder,pressure and terminating in an atomizer a yconduit lead. ing .troin--fsaidtank tosaid atoinizer, a sup ply vtaak in communication with said'tank, and a valve icr regulating the act-ion of said intake. i

5. The con'ibination with an airpump, oit Ya vacuum tank, an intake tor said pump in communication with said tank and with the atmosphere, a constri'cted outlet for said pump to cause outflow under ,pressure and terminating` 'in an atomizer, .faconduit lea`d ing ifi-om said tank to said VVatomize'r, a suplply tank in *communication With said tank, and a valve between -sa-id intake and lsaid tank.

6. The combinationWith an air pump, ot -a vacuum tank, `an intake V`for said pump i-n communication Withsaid tank, and with the atmosphere, aconstricted outlet for said :pump to cause outioiv under pressureand t'ciininating' inan atomizelr at a loiverlevel than `said tank, conduitleading` trom saidA @ABL E. ANDERSON. 

